Chapter 32 32.pdf · Name _ Chapter 32 Starting System Testing and Repair 165 16. Describe a...

Chapter 32Starting System

Testing and Repair

Name: _______________________ Date:

Instructor: Score: Textbook pages 520-537

Objective: After studying this chapter, you will be able to test and repair common starting system troubles.

Starting System Diagnosis1. Define a no-crank problem. _

2. Technician A says poor electrical connections can cause a no-crank problem. 2. _Technician B says that broken flywheel teeth can cause a no-crankproblem. Who is right?

(A) A only.(B) B only.(C) Both A and B.(D) Neither A nor B.

3. A single click sound, without cranking, may be due to all of the following, 3. _except:

(A) burned solenoid contacts.(B) engine mechanical problems.(C) weak overrunning clutch.(D) bad starter motor.

4. List the causes of a humming sound after momentary engine cranking.

5. Technician A says normal cranking without starting is caused by the starter 5. _system. Technician B says normal engine cranking without starting iscaused by worn pinion gear teeth. Who is right?


6. A start/die symptom is an indication of what conditions? _

163

164 Modern Automotive Technology Workbook

7. What is a starting headlight test? _

8. List eight problems that can develop in a starting system.

9. A vehicle's lights stay bright with no cranking. What might be the problem?

10. Technician A says a discharged or poorly connected battery can operate the 10. _lights, but may not have enough power to operate the starting motor.Technician B says a discharged or poorly connected battery will notoperate the lights or the starting motor. Who is right?


11. Describe the procedure for performing a starter current draw test. _

12. When performing a starter current draw test, you should crank the enginefor no longer than __ seconds.

12. _

13. (A) _

(B) _

13. List the typical starter current draw values for the following engines.

(A) Engine with 4 or 6 cylinders = _?_ amps.

(B) Engine under 300 eID = _?_ amps.

14. __ tests will quickly locate a part with higher-than-normal resistance. 14. _

15. During an insulated circuit resistance test on the starter solenoid, the volt-meter reads a 3.2 volt drop. Technician A says this could be caused byburned solenoid contacts. Technician B says this could be caused by pittedsolenoid contacts. Who is right?


15. _

Name _ Chapter 32 Starting System Testing and Repair 165

16. Describe a starter ground circuit test. _

Battery Cable Service

17. Technician A says you can remove starting system parts without 17. _disconnecting the battery. Technician B says if you do not disconnect thebattery before removing starting system parts, an electrical fire couldresult. Who is right?


18. How do you do a battery cable connection test with a voltmeter? _

19. All of the following should be taken into consideration when replacing 19. _battery cables, except:

(A) cable length.(B) cable diameter.(C) using aluminum terminals.(D) using lead terminals.

20. Technician A says when tightening the connections on the end of battery 20. _or starter cables, only snug down the fasteners. Technician B says many ofthe threaded studs, bolts, and nuts are made of soft lead and can strip andbreak easily. Who is right?


Starter Solenoid Service

21. Which of the following is the most likely symptom of a bad starter 21. _solenoid?

(A) Slow cranking.(B) Starter engages, but does not turn the engine.(C) Grinding noise when cranking.(D) Fast cranking.


22. Describe how a starter solenoid can become defective. _

23. A suspect starter solenoid has a voltage drop of 0.1 volt. Technician A says 23. _the starter solenoid is defective. Technician B says the cable connectionsare loose. Who is right?


24. Briefly describe the procedure for replacing a solenoid that is mounted on the starter.

Ignition Switch Service

25. What can happen if an ignition switch is defective? _

26. What should happen when you touch a test light to the starter solenoid start 26. _(S) terminal?

(A) The test light will remain out when the key is turned to start theengme.

(B) The test light will glow when the key is turned to start the engine.(C) The test light will glow all the time.(D) The test light will remain out all the time.

Starter Relay Service

27. How can you tell if you have a faulty starting motor relay? _

28. What tool should you use to test a starter relay? 28. _

Neutral Safety Switch Service

29. A car will not start in park, but will start in neutral. Technician A says this 29. _is caused by a misadjusted neutral safety switch. Technician B says this iscaused by a defective ignition switch. Who is right?



30. All of the following are locations for the neutral safety switch, except:(A) transmission.(B) steering column.(C) shift lever.(D) brake pedal.

31. Describe how to test a neutral safety switch. _

30. _

Starter Service

32. All of the following are symptoms of a faulty starter motor, except:(A) fast cranking.(B) no cranking.(C) starter cable overheating.(D) abnormal noises while cranking.

33. List the five major steps for a starting motor rebuild.

32. _

34. Technician A says many shops do not rebuild starter motors. Technician B 34. _says the cost of labor is too high to make in-shop starter rebuildingeconomical. Who is right?


35. Which of the following is false about starter repairs? 35. _(A) The pinion gear can be replaced without complete starting motor

disassembly.(B) When the starter must be repaired, it has to be completely

disassembled.(C) When the starter must be repaired, you may only need to disas-

semble a section of the starter.(D) By removing only the drive and C-Iock, the brushes are not

removed.

36. List, in order, the procedure for starter removal.


37. Identify the parts and problems common to a starting motor.

(A) _

(B) _

(C) _(D) _(E) _

(F) _

(G) _(H) _(I) _

(1) _

\.<,_--

.•.. -'" -'------ ......•.••---- ~----- )//'

E

38. What should you check for whenever you remove a starter? 38.

39. Technician A says if the shims are not replaced, the pinion and flywheel 39.<:>

gears will not mesh properly. Technician B says the shims have no effecton pinion and flywheel gear alignment. Who is right?


40. Some late-model engines place the starting motor under the engine __ . 40.

41. List the six steps for starter disassembly.

(1)

(2)

(3)

(4)

(5)iiI(6) i~1

42. After the starter has been disassembled, blow all the parts clean with 42.


43. All of the following parts cannot be cleaned with solvent, except:(A) armature.(B) overrunning clutch.(C) brushes.(D) drive end housing.

44. Worn starter brushes can cause(A) reduced starter torque(B) excessive starter current draw(C) noisy starter operation(D) Both A and B.

43. _

44. _

45. How are the brush wire leads attached? _

46. Technician A says you should inspect the armature windings and cornmu- 46. _tator for signs of burning or overheating. Technician B says if the armaturehas been rubbing on a field pole shoe, the shaft may be bent. Who is right?


47. Describe how to use a growler properly. _

48. What test do you use to check armature continuity? 48. _

49. If the armature windings are in good condition, the commutator should be 49. _cleaned using __ .

(A) solvent(B) a fine chamois(C) very fine sandpaper(D) emery cloth

50. After machining, the __ between each commutator may need to be 50. _undercut.

5l. A field coil is being tested for an open. Technician A says you can use a 5l. _battery-powered test light. Technician B says you can use a voltmeter. Whois right?


52. What should happen if ohmmeter leads are touched across the field coil and ground?

53. When should the overrunning clutch be replaced? _


54. Technician A says you should replace the pinion gear during starter ser- 54. _vice. Technician B says if the pinion is to be reused, you should check thegear teeth for wear. Who is right?


55. All the following should be lubricated when reassembling the starter, 55. _except:

(A) brushes.(B) armature shaft bushings.(C) pinion gear splines.(D) starter drive yoke.

56. How can brushes be locked out of the way during starter reassembly? _

57. What should be done to the starter before it is mounted on the engine? _

58. Define starter pinion gear clearance. _

59. What would happen if the shims are left out during starter installation? _

60. Technician A says if the starter has a solenoid on it, you should connect thewires on the solenoid before bolting the starter to the engine. Technician Bsays you should connect the wires to the solenoid after the starter is boltedto the engine. Who is right?


60. _

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